1611797145 has 64 divisors (see below), whose sum is σ = 3051012096. Its totient is φ = 711210240.

The previous prime is 1611797137. The next prime is 1611797147. The reversal of 1611797145 is 5417971161.

It is not a de Polignac number, because 1611797145 - 2³ = 1611797137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1611797097 and 1611797106.

It is not an unprimeable number, because it can be changed into a prime (1611797147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 507352 + ... + 510518.

It is an arithmetic number, because the mean of its divisors is an integer number (47672064).

Almost surely, 2^1611797145 is an apocalyptic number.

1611797145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1611797145 is a deficient number, since it is larger than the sum of its proper divisors (1439214951).

1611797145 is a wasteful number, since it uses less digits than its factorization.

1611797145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350.

The product of its digits is 52920, while the sum is 42.

The square root of 1611797145 is about 40147.1934884619. The cubic root of 1611797145 is about 1172.4746475334.

The spelling of 1611797145 in words is "one billion, six hundred eleven million, seven hundred ninety-seven thousand, one hundred forty-five".